Here's a link that may describe what's considered basic wear and tear versus items that would be considered damages
Here's another link that addresses carpet
CALCULATING THE ACTUAL COST OF CARPET DAMAGE
One common method of calculating the deduction for replacement PRORATES the total cost of replacement so that the tenant pays only for the REMAINING USEFUL LIFE of the carpet the tenant has damaged or destroyed.
For example, suppose a tenant has damaged beyond repair an 8 old carpet that had a life expectancy of ten years, and that a replacement carpet of similar quality would cost $1,000. The landlord could properly charge only $200 for the two yearsâ€™ worth of life (use) that would have remained if the tenant had not damaged the carpet.
ORIGINAL COST OF CARPET $1,000
Expected life of carpet 10 years
Depreciation charge ($1,000 / 10) $100 per year
Age of carpet 8 years
Carpet Life Years Remaining 10 years - 8 years = 2 years
Value of 2 years Carpet Life Remaining 2 years * $100 per years = $200
TYPICAL DAMAGES in RENTALS
-Holes in wall from hanging pictures, removal of Decals on the walls. Larger gouges etc.
-Tear in carpet, animal stains (even if landlord knew you had a pet). Burn marks - iron, cigar, cigarette, ground in stains.
-Doors with holes. Doors or windows broken. Glass etc.
-Clogged drains caused by your misuse of sinks or toilets. If you rent to women (college girls for example) be sure to remind them to dispose of feminine products in the trash, not the toilet.
-Broken or missing blinds or curtains. If they were there when you moved in, they must be there when you leave. If you don't want them, discuss this with your landlord. If he says "I don't care" send him a letter to confirm...as we discussed..
-Eliminating Flea infestations caused by tenants animals. The same for smoke damage from smoking or burning candles.
-Excessive Bathroom mildew. Use a good cleaning product like Tilex or Spray 409 weekly.
-Broken shelves in a refrigerator. Excessive dirt/dust in the refrigerator vents. This is the area under or behind the unit. Vacuuming improves performance. Every time you vacuum, vacuum around the unit,
-Excessive dirt or filth in an oven or refrigerator. Defrost the refrigerator if not frost-free. Stoves can take 2-3 hours to clean if you have it cleaned. Use Easy-off. That's why the named it that.